Finding the Fourth Proportional to 2,391.84, 3,303.24 and 1,647.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.84 : 3,303.24 = 1,647.72 : x
2. Step 2: Convert to fraction form
   2,391.84/3,303.24 = 1,647.72/x
3. Step 3: Cross multiply
   2,391.84x = 3,303.24 × 1,647.72
4. Step 4: Simplify right side
   2,391.84x = 5,442,814.61
5. Step 5: Solve for x
   x = 5,442,814.61/2,391.84
6. Step 6: Final answer
   x = 2,275.58